How to bind two different JavaFx properties: String and Double (with StringConverter)?
binding, javafx, properties
Solution
This is probably a small "trap" in JavaFX properties. If you look closely at the signature:
static <T> void bindBidirectional(Property<java.lang.String> stringProperty,
Property<T> otherProperty, StringConverter<T> converter)
The parameter of the converter must match the parameter of the property. But (the surprize here) `DoubleProperty` implements `Property<Number>`, thus the mismatch in `bindBidirectional`. Luckily the solution is simple: use `NumberStringConverter`:
StringProperty sp = ...;
DoubleProperty dp = ...;
StringConverter<Number> converter = new NumberStringConverter();
Bindings.bindBidirectional(sp, dp, converter);
You get the extra benefit that you can specify the conversion format.
Problem
For this piece of code (JavaFX). ``` StringProperty sp; DoubleProperty dp; StringConverter<Double> converter = new DoubleStringConverter(); Bindings.bindBidirectional(sp, dp, converter); ``` I get compilation error (in Eclipse IDE) This is the method signature: ``` public static <T> void bindBidirectional(Property<String> stringProperty, Property<T> otherProperty, StringConverter<T> converter) ``` But if I remove parametrization (of StringConverter), then I get only warnings and code works. ``` StringConverter converter = new DoubleStringConverter(); ``` I am trying to avoid to use raw type of generics so that I don't have to suppress warnings in my IDE. So the question is: What is the right pattern to write this piece of code?